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Shared Management of Non-Motorized Vehicles at Yangzhuang Station:An Analysis Based on Spatial Optimization and Collaborative Governance during Peak Hours
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作者 CAI Bingjie LIU Yuxi +2 位作者 LI Yijia MA Xiangyu LIU Zihan 《Journal of Landscape Research》 2025年第6期23-26,共4页
With the expansion of urban rail transit networks,subways have become the primary mode of commuting for residents,leading to a growing demand for non-motorized vehicle connections during the“last mile”.This study fo... With the expansion of urban rail transit networks,subways have become the primary mode of commuting for residents,leading to a growing demand for non-motorized vehicle connections during the“last mile”.This study focuses on Yangzhuang Station in Shijingshan District of Beijing,analyzing the distribution of non-motorized vehicle parking spaces in the station’s forecourt,the management mechanisms in place,and user behavior patterns.Research indicates that during peak hours,the number of non-motorized vehicles is substantial,their parking spaces are dispersed,and the parking order is disorganized.The existing model,which combines“enterprise dispatching with community supervision”,faces challenges in achieving comprehensive coverage and dynamic management.Based on this analysis,three strategies are proposed:utilizing green and underused spaces,implementing intelligent parking guidance systems,and optimizing management mechanisms.These approaches aim to enhance the spatial capacity of the station’s forecourt,standardize parking practices,and promote low-carbon travel.The findings of this study offer valuable references and practical insights for the management of non-motorized vehicles at comparable subway stations. 展开更多
关键词 Subway station Forecourt non-motorized vehicle Shared bike Low-carbon travel
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The Management of Non-motorized Vehicle Parking in Metro Stations from the Perspective of Public Demands:A case study of Pingguoyuan Station in Shijingshan District
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作者 LIU Yuxi CAI Bingjie +2 位作者 LI Yijia MA Xiangyu LIU Zihan 《Journal of Landscape Research》 2025年第6期45-48,共4页
The issues of slow traffic connection around Pingguoyuan Metro Station were studied,such as the disorderly parking of non-motorized vehicles in the entrances and exits and the difficulty in maintaining order over the ... The issues of slow traffic connection around Pingguoyuan Metro Station were studied,such as the disorderly parking of non-motorized vehicles in the entrances and exits and the difficulty in maintaining order over the long term.Through policy review,on-site observation,and analysis of public feedback,the underlying reasons such as extensive parking space configuration,the lack of coordination mechanisms,and the spatial tension caused by the overlapping of peak traffic flows were revealed.Besides,comprehensive response paths were proposed from aspects of facility optimization,the reconfiguration of the responsibility system,and the improvement of the public participation mechanism,including the construction of intelligent parking spaces,the establishment of a joint management model between the local area and the operating unit,and the transformation of the handling of public demands from passive response to proactive governance.The research results can provide a reference for the coordination of traffic organization and grassroots governance around urban railway stations. 展开更多
关键词 Connection of subway stations Parking of non-motorized vehicles Public demands Collaborative governance Pingguoyuan Station
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Modeling Bicycle Conflict on Non-Motorized Paths on Suburban College Campuses 被引量:1
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作者 Zachary Nerwinski Ardeshir Faghri Mingxin Li 《Journal of Transportation Technologies》 2018年第4期357-375,共19页
Bicycling is an important way for college students and employees to get around campuses. With a rise in bicycling on campuses there comes a rise in bicycle collisions with pedestrians walking to and from classes and w... Bicycling is an important way for college students and employees to get around campuses. With a rise in bicycling on campuses there comes a rise in bicycle collisions with pedestrians walking to and from classes and work. The literature review showed many papers involving bicycle conflict modeling but on roads with motor vehicles. While some aspects of this research can be applied to non-motorized paths, there is a lack of research strictly focusing on only bicycles and pedestrians. This study aims to fill this knowledge gap by developing a model to identify locations on roads and paths (hotspots) on college campuses that are likely to have a bicycle collision and predict the likelihood of a serious bicycle crash on a non-motorized path based on the characteristics of the path. This study identifies those interactions between bicyclists and pedestrians on non-motorized paths on a suburban college campus in Newark, USA. Findings suggest that pedestrian density of a path is a major factor in the maximum speed bicyclists can achieve. The wider the path is, the higher the maximum speed is that a bicyclist can obtain. This is because a wider path width decreases the pedestrian density. The grade of the path has little effect on bicycle speeds. The results of the models were displayed on a GIS map that is visually appealing to a viewer. The paths were color coded based on their level of safety, so it is easy to observe problematic areas of the network. This technique can be applied to the entire campus network of non-motorized paths to study the whole system. This can then be used by planners and designers to identify areas that need upgrading and improve the overall safety of the non-motorized path system. 展开更多
关键词 CONFLICT Safety non-motorized Path CYCLIST Violations SUBURBAN COLLEGE Campus
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Non-motor signs and symptoms in Parkinson’s disease
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作者 Kazuo Abe 《Health》 2012年第11期1133-1137,共5页
Motor symptoms are cardinal clinical features of Parkinson’s disease (PD). Progress in drug therapy and rehabilitation has been presenting beneficial effect for motor symptoms. However, non-motor symptoms and signs i... Motor symptoms are cardinal clinical features of Parkinson’s disease (PD). Progress in drug therapy and rehabilitation has been presenting beneficial effect for motor symptoms. However, non-motor symptoms and signs in PD have been accumulated growing attentions and its amelioration may also give beneficial effect for PD patients’ and their care givers’ quality of life. In this mini-review, I overviewed non-motor symptoms and signs in PD. 展开更多
关键词 Parkinson’s Disease (PD) non-motor SIGNS and SYMPTOMS Activities of Daily Livings (ADL) Quality of Life (QOL)
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Non-Motor Symptoms in Parkinson’s Disease Patients—An Observational Study
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作者 Thomas Gabriel Schreiner 《Journal of Biosciences and Medicines》 2020年第6期1-16,共16页
<strong>Background: </strong>Parkinson’s disease (PD) remains a challenge for neurologists, particularly in its advanced stages when non-motor symptoms become a burden for the patient. While motor symptom... <strong>Background: </strong>Parkinson’s disease (PD) remains a challenge for neurologists, particularly in its advanced stages when non-motor symptoms become a burden for the patient. While motor symptoms may be satisfactorily controlled with levodopa therapy or continuous levodopa/carbidopa intestinal gel (LCIG) administration, autonomic, sleep and mental disorders are hard to treat. During the last years, researchers have shifted their interest more to non-motor symptoms, PD being now considered a complex multiorgan impairment. <strong>Objective:</strong> The aim of this study was to describe non-motor symptoms in 40 Romanian patients diagnosed with PD, under conventional and LCIG administration treatment. <strong>Methods: </strong>A cross-sectional observational study was conducted, consisting of two groups of 20 patients each: the first group comprised PD patients who received conventional Levodopa treatment, while the second group was formed of patients receiving LCIG therapy. Various data concerning patient’s age, gender, duration of illness, comorbidities, motor and non-motor symptoms were recorded. The data were processed in SPSS v.20. <strong>Results: </strong>Subjects under continuous LCIG administration, although showing amelioration of motor symptoms, complained more frequently of constipation, mental, and sleeping disorders (statistically significant). Regarding anosmia, orthostatic hypotension, hypersalivation, urinary incontinence and restless legs syndrome, no statistical significant difference was observed between the two groups (p > 0.05). <strong>Conclusion:</strong> Nowadays, more research is conducted on non-motor symptoms in PD patients, as therapeutic measures try to limit these burdens, in order to improve patient’s quality of life. 展开更多
关键词 Parkinson’s Disease non-motor Symptoms Conventional Treatment Levodopa/Carbidopa Intestinal Gel
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Temporal Stability and Transferability of Non-Motorized and Total Trip Generation Models
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作者 Judith L. Mwakalonge Juhann C. Waller Judy A. Perkins 《Journal of Transportation Technologies》 2012年第4期285-296,共12页
Transportation systems provide a means for moving people and the goods from which they are spatially separated. Of the two means of surface transportation, the motorized mode is used extensively for utilitarian travel... Transportation systems provide a means for moving people and the goods from which they are spatially separated. Of the two means of surface transportation, the motorized mode is used extensively for utilitarian travel in developed countries. The increasing reliance on motorized travel has contributed to increased traffic congestion, air pollution, and greenhouse emissions. Non-motorized travel has recently received significant attention as a means to reduce congestion and environmental problems and improve human health. However, non-motorized modeling is generally underdeveloped. This study investigated some changes in non-motorized and total travel and the characteristics of the traveling public in 1990, 1995, 2001, and 2009 using a national travel survey. The study also investigated the temporal transferability of linear-regression trip generation models for non-motorized and total travel under such changes. High-income households made fewer non-motorized trips in 1990 and 1995 compared to 2001 and 2009. Persons aged 50 and over showed an increased demand for non-motorized travel, whereas children aged 0 - 15 showed a decreasing preference for non-motorized travel over time. Regarding temporal stability, only the coefficient for single-adult households with no children was stable across all of the analysis years. For both non-motorized and total travel, most model parameter estimates were stable short term but not long term. In general, the total travel models transferred better than non-motorized models, both short term and long term. Despite not finding universal stability in model parameter estimates, the models were marginally able to replicate travel in 2009 relative to the locally estimated 2009 model. 展开更多
关键词 non-motorized Trasferability TEMPORAL Total TRAVEL
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Investigation and Optimization of Priority for Non-motor Vehicles in the Old Urban Area of Nanchang
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作者 ZENG Yan KUANG Chen +2 位作者 FU Ruixia LIU Zhixin YIN Caiyun 《Journal of Landscape Research》 2020年第3期54-56,共3页
Under the background of"people-oriented"thought and"green transportation",the idea of"priority for non-motor vehicles"came into being,which can improve the riding environment of non-motor... Under the background of"people-oriented"thought and"green transportation",the idea of"priority for non-motor vehicles"came into being,which can improve the riding environment of non-motor vehicle riders to a certain extent.According to the current situation of priority for non-motor vehicles in the old urban area of Nanchang,through field investigation,questionnaire investigation and interview,this study summarized the existing problems,and put forward optimization suggestions for these problems,in order to provide reference for areas with similar conditions. 展开更多
关键词 non-motor vehicle PRIORITY Old urban area of Nanchang SURVEY OPTIMIZATION
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Monoamine Oxidase-B Inhibitor Rasagiline Effects on Motor and Non-Motor Symptoms in Individuals with Parkinson’s Disease: A Systematic Review and Meta-Analysis
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作者 Paula Abola Mitchell Wolden 《Advances in Parkinson's Disease》 CAS 2024年第3期27-56,共30页
Objective: In the manuscript titled Monoamine Oxidase-B Inhibitor Rasagiline Effects on Motor and Non-Motor Symptoms in Individuals with Parkinsons Disease: A Systematic Review and Meta-Analysis, the objective was to ... Objective: In the manuscript titled Monoamine Oxidase-B Inhibitor Rasagiline Effects on Motor and Non-Motor Symptoms in Individuals with Parkinsons Disease: A Systematic Review and Meta-Analysis, the objective was to conduct a systematic review with meta-analysis to investigate the effects that Rasagiline has on motor and non-motor symptoms in individuals with PD. Introduction: Rasagiline is a second-generation monoamine oxidase-B (MAO-B) inhibitor used both as monotherapy and adjunctive therapy for Parkinsons Disease (PD). Methods: A systematic literature search and meta-analysis were performed with randomized control trials that investigated the effects of Rasagiline on motor and non-motor symptoms in individuals with PD. The systematic search was conducted in PubMed, Cochrane, and EBSCO databases. Methodological quality was assessed using the Cochrane Grading Recommendations Assessment, Development and Evaluation approach. Results: Fourteen studies were included in our review. There were trivial to small and statistically significant improvements in motor symptoms for individuals with PD treated with Rasagiline compared to placebo. Non-motor symptoms showed no significant improvement with Rasagiline compared to placebo in five of six meta-analyses. Results were based on very low to moderate certainty of evidence. Conclusion: 1 mg/day Rasagiline significantly improved Parkinsonian motor symptoms in individuals with PD compared with placebo. For all outcomes, the 1 mg/day Rasagiline group was favored over the placebo group. 展开更多
关键词 Parkinson’s Disease Monoamine Oxidase-B Inhibitor RASAGILINE non-motor Symptoms Motor Symptoms UPDRS PDQ-39 OFF Time
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Factors Influence Hanoians’ Choice of Non-Motorized Transport Mode to Access Bus Stations
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作者 Ngo Trung Phuong Masahiko Kikuchi +1 位作者 Aya Kojima Hisashi Kubota 《Journal of Transportation Technologies》 2024年第3期372-389,共18页
Hanoi’s rapid urbanization has led to a surge in private vehicle ownership, particularly motorcycles, amidst inadequate public transportation infrastructure. Despite government efforts, many still prefer motorized tr... Hanoi’s rapid urbanization has led to a surge in private vehicle ownership, particularly motorcycles, amidst inadequate public transportation infrastructure. Despite government efforts, many still prefer motorized transport, citing mobility and safety concerns, exacerbated by insufficient pedestrian infrastructure. This study examines the motivations behind this reliance on motorized vehicles, particularly motorcycles, in Hanoi. Findings reveal safety and convenience as primary factors driving motorized transport use, especially for accessing bus stations. Economic incentives could promote non-motorized travel and public transport adoption. Policy implications highlight the importance of addressing economic factors and improving access infrastructure to manage motorized vehicle reliance and foster sustainable urban mobility in Hanoi. 展开更多
关键词 Access Mode Choice non-motorized Vehicles Motorized Vehicles Bus User Urban Transport Behavior
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Genetic factors associated with non-motor symptoms in Parkinson’s disease
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作者 Yilun Ge Kai Li Chunfeng Liu 《Journal of Translational Neuroscience》 2019年第1期15-29,共15页
Parkinson’s disease (PD) is the second most common neurodegenerative disorder after Alzheimer’s disease. It is a complex syndrome with heterogeneous aetiologies, pathogenesis and manifestations. Patients with PD may... Parkinson’s disease (PD) is the second most common neurodegenerative disorder after Alzheimer’s disease. It is a complex syndrome with heterogeneous aetiologies, pathogenesis and manifestations. Patients with PD may present with motor symptoms and various non-motor symptoms (NMSs). NMSs have been reported in almost every diagnosed case of PD and usually precede motor symptoms. Multiple factors have been proved to be associated with the occurrence of NMSs in PD, among which genetic differentiation is a featured one. With the development of sequencing techniques, an increasing number of NMS-related genetic factors have been identified. This article reviews some of the latest discoveries in this regard. 展开更多
关键词 Parkinson's disease (PD) non-motor SYMPTOMS (NMSs) GENETIC DIFFERENTIATION
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Connected and Autonomous Vehicles (CAVs) Challenges with Non-motorized Amenities Environments
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作者 Febronie Nambajemariya Yongshun Wang +2 位作者 Twizerane Jean D’Amour Kwizera Niyigena Vincent DePaul Yao Hu 《Artificial Intelligence Advances》 2021年第2期37-43,共7页
With the deployment of Connected and Automated Vehicles in the coming decades,road transportation will experience a significant upheaval.CAVs(Connected and Autonomous Vehicles)have been a main emphasis of Transportati... With the deployment of Connected and Automated Vehicles in the coming decades,road transportation will experience a significant upheaval.CAVs(Connected and Autonomous Vehicles)have been a main emphasis of Transportation and the automotive sector,and the future of transportation system analysis is widely anticipated.The examination and future devel­opment of CAVs technology has been the subject of numerous researches.However,as three essential kinds of road users,pedestrians,bicyclists,and motorcyclists have experienced little to no handling.We explored the influ­ence of CAVs on non-motorized mobility in this article and seven various issues that CAVs face in the environment. 展开更多
关键词 Autonomous vehicles Connected vehicles non-motorized PEDESTRIANS
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Redesign of Motorized and Non-motorized Transport in Cities and Sustainable Mobility
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作者 Osman Lindov Adnan Omerhodzic +1 位作者 Adnan Tatarevic Samir Dzaferovic 《Journal of Energy and Power Engineering》 2016年第3期206-210,共5页
Redesign of motorized and non-motorized transport in cities and sustainable mobility possibilities and utilization of already occupied areas for motorized and non-motorized transport in cities. Reserved area for publi... Redesign of motorized and non-motorized transport in cities and sustainable mobility possibilities and utilization of already occupied areas for motorized and non-motorized transport in cities. Reserved area for public transport may be the redesign much more to take advantage of without taking up new space in cities. Redesigned solutions shown in the work of public mass transport and the redesign of non-motorized transport, bicycle and pedestrian paths point to the improved use and safety of movement of passengers, cyclists and pedestrians. This paper presents five redesigned concept designs as improving existing forms of transport and movement of cyclists and pedestrians in cities. Redesigned conceptual designs of motorized and non-motorized transport in cities should serve as ideas for the growing problems of urban development in the segment of insufficient surface for pedestrians and cyclists, as well as sustainable mobility transport people in the city. 展开更多
关键词 REDESIGN motorized transport non-motorized transport sustainable mobility.
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An Age-friendly Renovation Strategy for the Non-motorized Traffic Environment in Tianjin’s Old Neighborhoods
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作者 LAN Xincheng LI Jianghong ZHANG Xiaoshan 《Journal of Resources and Ecology》 2025年第6期1680-1694,共15页
With the development of socio-economic conditions,comprehensive improvements in residential environments,and evolving family values among the elderly,mobility issues for senior citizens have become a prominent social ... With the development of socio-economic conditions,comprehensive improvements in residential environments,and evolving family values among the elderly,mobility issues for senior citizens have become a prominent social concern in China.Aging urban districts characterized by concentrated elderly populations exhibit significant environmental challenges and urgently need age-friendly infrastructure updates.This study conducted a comprehensive review of domestic and international literature related to the age-friendly renovation of the non-motorized traffic environment and systematically analyzed research trends and existing gaps.Furthermore,it investigated the pedestrian spaces in Tianjin’s aging urban districts and delineated multifaceted spatial challenges.Simultaneously,in-depth demographic analysis of the aging population in Tianjin’s four central urban districts informed the strategic selection of nine sub-districts—comprising the two sub-districts with the highest aging population rates in each district,along with Wanxing sub-district,which hosts the city’s largest elderly population.Through random interviews with 40 senior residents in those sub-districts,the multi-level environmental needs of elderly individuals in these aging urban neighborhoods were comprehensively explored and categorized.Ultimately,by comparing the environmental needs of the elderly population with the current urban landscape,this study accurately identified the key elements for the age-appropriate renewal of the non-motorized traffic environment.Furthermore,targeted strategic intervention plans that address the issue of infrastructure adaptation in aging urban areas are proposed. 展开更多
关键词 population ageing age-friendly renovation non-motorized traffic environment aging urban districts TIANJIN
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考虑混入自动驾驶车辆的机非混合交通流元胞自动机仿真
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作者 钱勇生 杨紫龙 +1 位作者 曾俊伟 魏谞 《计算机工程与应用》 北大核心 2026年第5期383-392,共10页
使用标线隔离的机非混合路段普遍存在非机动车越线变道的现象,严重影响正常交通,同时自动驾驶技术的应用使得现有针对机非混合路段的研究出现了局限性。为了探究和复现城市机非混合路段使用标线隔离而发生的混行现象,针对自动驾驶、人... 使用标线隔离的机非混合路段普遍存在非机动车越线变道的现象,严重影响正常交通,同时自动驾驶技术的应用使得现有针对机非混合路段的研究出现了局限性。为了探究和复现城市机非混合路段使用标线隔离而发生的混行现象,针对自动驾驶、人工驾驶车辆以及非机动车不同的特性分别提出了一种改进的元胞自动机模型,并以此为基础建立机非混合交通流元胞自动机模型。通过数值模拟结果表明:自动驾驶车辆的渗透率对道路通行能力和交通流速度波动有显著影响,无论对于机非混合交通流以及纯机动车流的运行状况都有着明显的提升作用。而非机动车的越线行为会对正常行驶的机动车流造成严重干扰。此外,还发现相比于标线隔离,物理隔离的方式在一定程度上可以提高交通流速度,降低速度波动。 展开更多
关键词 城市交通 机非混合交通流 自动驾驶汽车(AV) 元胞自动机 横向敏感距离
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基于生存分析法与改进NaSch模型融合的机非混行交通流研究
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作者 李冰 杨静丰 +2 位作者 陆大志 殷炬元 百文强 《重庆交通大学学报(自然科学版)》 北大核心 2026年第1期63-74,共12页
受限于道路基础设施和非机动车数量增长,机非混行已成为我国城市道路的典型特征,其混行交通流建模因共用车道而十分复杂。为克服现有研究对横向干扰动态变化分析的不足,基于生存分析法中的加速失效时间模型,探究不同交通因素对混行交通... 受限于道路基础设施和非机动车数量增长,机非混行已成为我国城市道路的典型特征,其混行交通流建模因共用车道而十分复杂。为克服现有研究对横向干扰动态变化分析的不足,基于生存分析法中的加速失效时间模型,探究不同交通因素对混行交通横向干扰的影响;引入IKKW模型优化NaSch模型,进而融合生存分析法与改进NaSch模型,构建量化横向干扰的机非混行交通流模型;通过仿真和实际数据分析混行交通流特性与空间分布。研究结果表明:机非临界横向距离服从威布尔分布,机动车速度、非机动车载物状态及交通流量显著影响横向干扰概率,该概率随机动车速度、非机动车速度及速度差增大而上升,随非机动车载物状态、机动车和非机动车流量增加而下降;当非机动车密度较低时,机动车主要受横向干扰,交通流临界密度降低;当非机动车密度较高时,机动车主要受纵向干扰,交通流临界密度上升,机动车自由流速度与非机动车同步,且在低密度状态下横向干扰次数显著高于高密度状态;实际数据显示,非机动车流量和横向干扰次数的绝对百分比误差分别为16.98%和8.72%,仿真模拟可有效模拟复杂混行环境。 展开更多
关键词 交通工程 机非混行交通 交通流理论 生存分析法 NaSch模型
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非机动车道路交通安全研究现状与发展趋势
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作者 何杰 陈维雨 +2 位作者 陈昊泽 方之茗 秦鹏程 《中国安全科学学报》 北大核心 2026年第2期52-65,共14页
为提升非机动车道路交通安全、降低非机动车道路行驶风险,系统梳理非机动车道路交通安全领域的研究脉络,探索该领域的研究动态与发展方向。基于中国知网(CNKI)和科学网(WOS)核心库,检索2000年1月—2025年3月的相关文献,筛选得到448篇中... 为提升非机动车道路交通安全、降低非机动车道路行驶风险,系统梳理非机动车道路交通安全领域的研究脉络,探索该领域的研究动态与发展方向。基于中国知网(CNKI)和科学网(WOS)核心库,检索2000年1月—2025年3月的相关文献,筛选得到448篇中文文献和860篇英文文献。运用CiteSpace软件,对文献进行关键词共现、聚类分析,进而归纳出核心研究热点与发展趋势。结果表明:该领域的研究规模显著增长,研究热点主要集中于非机动车骑行行为特征、道路交通事故成因、混合交通冲突机制以及与道路交通管理政策等4大主题。在未来研究中,需进一步拓展多元场景研究并深化多模态数据的融合应用;与此同时,计算机视觉与机器学习等技术正逐步成为推动该领域方法创新的关键支撑。 展开更多
关键词 非机动车 道路交通安全 交通事故 交通冲突 共现网络
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多元主体视角下街道非机动交通路权研究
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作者 惠英 李伟江 +1 位作者 廖佳妹 郭佳怡 《城市交通》 2026年第1期13-23,共11页
在存量为主的城市发展阶段,落实非机动交通路权优先意味着对街道时空资源的再分配和路权关系的再调整,需统筹协调多元主体之间的复杂权益关系。融合产权、工程与经济社会学等多学科视角,界定了路权的内涵、主体与客体及其相互关系,将具... 在存量为主的城市发展阶段,落实非机动交通路权优先意味着对街道时空资源的再分配和路权关系的再调整,需统筹协调多元主体之间的复杂权益关系。融合产权、工程与经济社会学等多学科视角,界定了路权的内涵、主体与客体及其相互关系,将具体权益划分为过程权力和结果利益,从而构建了多元主体视角下的街道路权概念体系。针对实践中存在的管理权责分散、公众诉求表达不畅、更新动力机制不足等难点,研究归纳出单中心政府主导型、单中心政府引导型、在地机构支持型、多部门协作型4类路权调整模式。围绕空间、经济、文化3个维度构建评估指标体系,通过问卷调查评估了非机动交通视角下不同路权调整模式的效益差异。最后,从推动多元共治、探索适宜实施路径以及完善动力机制3个方面提出对策建议。 展开更多
关键词 非机动交通 路权优先 街道更新 多元主体 效益评估
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基于终端滑模转速环的PMSM无模型预测电流控制
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作者 周晓华 张鹏阳 +1 位作者 王月武 吴雪颖 《组合机床与自动化加工技术》 北大核心 2026年第2期79-84,共6页
针对永磁同步电机无模型预测控制系统中传统的转速环PI控制存在超调量大,鲁棒性差等缺点,以及传统的模型预测电流控制(MPCC)对电机参数变化敏感,参数不匹配会导致性能下降的问题,提出一种基于扰动观测器和新型非奇异快速终端滑模转速环... 针对永磁同步电机无模型预测控制系统中传统的转速环PI控制存在超调量大,鲁棒性差等缺点,以及传统的模型预测电流控制(MPCC)对电机参数变化敏感,参数不匹配会导致性能下降的问题,提出一种基于扰动观测器和新型非奇异快速终端滑模转速环的PMSM无模型预测电流控制策略。该策略在转速控制环设计中采用非奇异快速终端滑模控制算法,通过构造新型的滑模趋近律实现有限时间收敛特性。同时构建扩张状态观测器(ESO)对负载转矩等集中扰动进行动态估计,并设计前馈补偿机制将观测值注入控制器,形成具有强抗扰能力的双闭环控制架构,以提高系统的鲁棒性。电流环采用基于超局部模型的无模型预测电流控制(MFPCC)。该方法不依赖于电机参数,进一步提高了系统的鲁棒性。仿真结果表明,与传统的MFPCC相比,所提控制方法在动态响应性能、鲁棒性和参数适应性方面具有显著优势,能够有效抑制超调和抖振,提高了系统的控制精度和稳定性。 展开更多
关键词 永磁同步电机 新型非奇异快速终端滑模控制 无模型预测 扩张状态观测器
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Study of an integrated non-motor symptoms questionnaire for Parkinson's disease 被引量:6
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作者 YU Bo XIAO Zhi-ying +2 位作者 LI Jia-zhen YUAN Jing LIU Yi-ming 《Chinese Medical Journal》 SCIE CAS CSCD 2010年第11期1436-1440,共5页
Background Although the validity of non-motor symptoms screening questionnaire (NMSQuest) for Parkinson's disease has been verified in several recent researches, the specificity of the questionnaire is still in dou... Background Although the validity of non-motor symptoms screening questionnaire (NMSQuest) for Parkinson's disease has been verified in several recent researches, the specificity of the questionnaire is still in doubt. This study aimed to compare the non-motor symptoms (NMS) in Parkinson's disease (PD) with a medically ill control group. Methods In this study, the first comprehensive clinic-based NMS screening questionnaire for PD developed by the Parkinson's Disease Non-Motor Group (PDNMG) was used. Data from 90 PD patients and 270 sex-and age-matched control subjects, including stroke (n=90), heart disease (n=-90) and diabetes (n=-90) were analyzed. Results Compared with control group, NMS was more common in PD; on an average, most PD patients reported more than 12 non-motor items. There was a correlation of total NMS score in PD patients with Hoehn & Yahr Staging, but not with age, sex distribution, disease duration, or age at disease onset. Additionally, depression, constipation and impaired olfaction which occurred prior to the motor symptoms of PD were reported in this study. Conclusions NMS are more common in PD patients. There are some NMS that occurred at the preclinical stage of PD and might predict the onset of motor symptoms of PD patients. 展开更多
关键词 Parkinson's disease non-motor symptoms QUESTIONNAIRE
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雷沙吉兰联合多巴丝肼治疗伴症状波动的原发性帕金森病的临床效果
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作者 顾晨晨 纪海霞 +3 位作者 吴亚平 高尚艳 袁卫 王洪亮 《临床合理用药》 2026年第4期8-11,共4页
目的观察雷沙吉兰联合多巴丝肼治疗伴症状波动的原发性帕金森病的临床效果。方法选取2022年3月—2024年12月于上海大学附属南通医院(南通市第六人民医院)神经内科就诊的伴症状波动的原发性帕金森病患者100例,采用随机数字表法分为研究... 目的观察雷沙吉兰联合多巴丝肼治疗伴症状波动的原发性帕金森病的临床效果。方法选取2022年3月—2024年12月于上海大学附属南通医院(南通市第六人民医院)神经内科就诊的伴症状波动的原发性帕金森病患者100例,采用随机数字表法分为研究组和多巴丝肼组,每组50例。多巴丝肼组给予多巴丝肼治疗,研究组在多巴丝肼组基础上给予雷沙吉兰治疗,2组均治疗12周。比较2组帕金森病评定量表III(UPDRSIII)、汉密尔顿抑郁量表(HAMD)、汉密尔顿焦虑量表(HAMA)、简易精神状态量表(MMSE)、日常生活能力量表(ADL)评分及不良反应。结果治疗12周后,2组UPDRSIII、HAMD、HAMA评分低于治疗前,且研究组低于多巴丝肼组(P<0.05或P<0.01);2组MMSE、ADL评分高于治疗前,且研究组高于多巴丝肼组(P<0.05或P<0.01)。研究组与多巴丝肼组不良反应总发生率比较差异无统计学意义(18.00%vs.22.00%,χ^(2)=0.250,P=0.617)。结论雷沙吉兰联合多巴丝肼治疗伴症状波动的原发性帕金森病的临床效果较好,可改善患者的运动及非运动症状,提高患者的生活质量和认知功能。 展开更多
关键词 帕金森病 原发性 症状波动 雷沙吉兰 多巴丝肼 运动症状 非运动症状
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